. the reluctance of daniel day lewis. tonight, for the first time here, together, telling how they brought a mythic president to life. our "persons of the week." >>> good evening. simply put, it was a shock today, when we learned that the general who symbolized the discipline and honor of the american military, the man entrusted with the vital secrets of the cia, general david petraeus, resigned, citing an extramarital affair. the first cia director in history to resign this way. and the story is still breaking. so, we go straight to abc's senior foreign affairs correspondent, martha raddatz. right now. martha? >> reporter: diane, i've known david petraeus for close to a decade and this news is truly stunning. there is no one in the military who was view ed as more disciplined and, frankly, more concerned with his own image and own career. but the seriousness of having a cia director involved in an extramarital affair cannot be overplayed. as cia director, petraeus held all of the nation's secrets, but was keeping a big one of his own. today, in a statement to cia employees, the man considered a na
